WTB [EU/GER] 10s4p - 10s5p Battery pack with BMS (18650)

I’m looking for a 10s4p to 10s5p Battery pack to further pimp my Wowgo. I currently have 2x 6.4Ah batteries with different cells though. Cell wise 30Q preferred but Panasonic etc is good too as long as it gets me to my destination and won’t sag like my LG cells.

Custom or prebuild is fine. Preferred to have a BMS installed.

i have 2x 10s4p Samssung 25R with BMS - built a year ago, discharged 3x and stored at 3.6 v

175euros each

Did you build them yourself? What range did you get out of it?